The dark shadow

+1: Chose 1- create a 1/1 shadow with menace and shroud, heal 1 life, or put a +1/+2 counter on target creature.
-3: Give target creature unblockable until end of turn. The opponent can block the creature if they have a creature with subtype shadow.
-10: Create two 10/10 shadows with unblockable, and shroud. Heal 10 life, deal 10 damage to target creature, player, or planeswalker.